aLIGO LHO Logbook

LHO General

corey.gray@LIGO.ORG - posted 00:05, Saturday 14 November 2015 - last comment - 01:18, Saturday 14 November 2015(23380)

EVE Ops Summary

TITLE: 11/14 OWL Shift: 00:00-08:00UTC (16:00-00:00PDT), all times posted in UTC

STATE of H1: High winds continue (now averaging about 30mph). LVEA useism is at 1.0um/s. For locking, we need winds below 20mph and useism down to 0.7um/s.

Incoming Operator: Cheryl Monitoring From Home

Support: Talked with Mike on the phone. Nutsinee was also here.

Quick Summary:

Shift was awash, with no locking attempts at all due to high seismic activity which has been going on 24+hrs! I have occupied an FOM screen (nuc0 & it can be view here) so Cheryl can monitor seismicity & ALS locking from home. If the winds ever calm down during her shift, she will come in.

Activities:

Topped of Crystal Chiller
2:15 Nutsinee out of LVEA for HWS work
Nutsinee noticed tripped TCS-X laser. Talking with Mike/Alastair about fix
2:20 Taking HAM2, HAM5, & HAM6 ISIs to ISOLATED now that Nutsinee is done. Mode Cleaner locked. Waiting for TCSx to get sorted before working on alignment.
Went out on floor to bring back TCSX (see Nutsinee's alog).
Guardian was giving low ISS diffracted power, so made an adjustment to REFSIGNAL
Attempted Initial Alignment but ALS locking not possible due to seismic. ALS locks would last seconds to a couple of minutes before dropping out.

Comments related to this report

cheryl.vorvick@LIGO.ORG - 01:18, Saturday 14 November 2015 (23391)

Link

Winds had died down - and were showing max. of about 22mph on site - now climbing back up.

Current winds around the Hanford site are mostly avergaes around 14mph and max. winds of 20-26mph, except for one station that says max. inds of 32mph, which is the highest I could find.

Y arm looks like it's been locked for an hour.

Since Y arm looks good and winds are still less than an hour ago, I'm heading to the site and will try to make progress on aligning and locking.